|Jul26-05, 07:08 PM||#1|
As far as I know it's generally accepted that the entire universe is expanding; however, I recall hearing or reading that as far as we can observe, it is expanding faster than the speed of light.
How is this possible? Assuming that it is in fact expanding faster than the speed of light, of course. I'm not sure, but I'm pretty sure I remember hearing that somewhere.
|Jul26-05, 08:16 PM||#2|
My personal view of physics contains an alternate route, branching at the distance/redshift relationtionship often attributed to Hubble, but never embraced or endorsed by him. Namely, the concept that the universe must be exploding because the farther galaxies are, the more they are redshifted.
It is entirely possible that light can be redshifted by travelling long distances, interacting with transmissive media etc, etc. Hubble was open to this - more recent folks are not.
|Jul26-05, 08:22 PM||#3|
I guess I'm not too sure on how we can measure universal expansion in the first place though.
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